https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244356
--- Comment #53 from Olivier Certner <[email protected]> --- (In reply to Sebastien Boisvert from comment #44) Hi Sébastien, And first of all, I wanted to say this earlier, maybe now it matters even more: I did not want to hijack your initial bug report in any way, so I hope you don't feel that way. Given your initial reports and my experiments, I thought that we were seeing the same exact problem (at least, the same symptoms). Since then, more testing has given birth to a much more contrasted picture, at least on my side. As said in comment #45, SD_64G and SD_128G seem not to work under `usbtest` (the first at all, the second one when writing), so just may be bad, and I'm trying to RMA them (initial request sent). The situation for KT_32G seems more complex. Indeed, it reliably passes `usbtest`, *except* when I/O size is set to "Random" (the default), in which case no transfer happens and the stick simply disconnects from the bus. Plus, `iostat` reports a pattern that I find quite weird. If you're OK, I'm proposing you to do some tests with your USB 3 sticks (see below), to dig deeper and know to which extent we are indeed seeing the same behaviors. If you're annoyed by my follow-ups, I will happily open another PR and put information there. So, it would be great if you could run the following tests on your USB 3 sticks, and in particular the two models of Kingston. 1. `usbtest` umass: At least, write only, read only, read+write, with I/O size Random and Increasing. 2. `dd` test (see comment #52), with `iostat -w 1 <stick_device>` running elsewhere (and reporting both outputs). Thanks and sorry again if I bothered you. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[email protected]"
